Our nethack server now has its own twitter feed: http://twitter.com/JerkNethack
Unlike the RSS feed, which has a 1-2 hour delay, this will give you near-INSTANTANEOUS updates on the deaths of other players. Also unlike the RSS feed, twitter is not state-based, so it could conceivably let you know about bones files. (Expect that functionality in a day or two.)
Update: The feed now lets you know about bones files.